LED显示屏通用脱机播放器系统设计

发布时间：2018-01-16 15:20

本文关键词：LED显示屏通用脱机播放器系统设计　出处：《中国科学院研究生院（长春光学精密机械与物理研究所）》2012年硕士论文　论文类型：学位论文

【摘要】：LED显示屏称电子显示屏,由LED发光二极管点阵和LED驱动面板组成。全彩LED显示屏可以清晰的显示图文、动画、视频和图表等各种信息,还可显示电视、录像、和现场实况。LED显示屏具有其它传统显示器件无法比拟的优点：亮度高、功耗低、性能稳定、面积可随意扩展。目前广泛应用于交通运输、媒体广告,公共场所等众多领域。本文结合LED显示屏的需求和异步播放方式的特点,设计了一款高性能嵌入式平台,实现了全彩LED显示屏异步播放控制。系统硬件结构以DM3730微处理器为核心,外围扩展网络通讯、串口通讯、SD大容量存储卡接口、USB接口等外部模块。构建了以linux为核心的嵌入式操作系统环境,并基于linux开发了功能强大,性能稳定、满足多领域需求的全彩LED显示屏通用脱机播放器软件。本文的主要内容包括以下方面： 1.,分析用户需求,设计异步播放系统的整体模型,划分硬件系统和软件系统功能模块。 2.基于DM3730平台构建系统层软件,包括BootLoader移植,Linux2.6.32版本内核移植,根文件系统构建,设备驱动移植。 3.LED通用脱机播放器控制软件开发。设计出一种支持节目调度,播放控制,多区域显示和多种媒体类型的播放器控制软件。 4.基于3D硬件加速的显示系统设计。利用DM3730的3D图形加速功能来提升系统的显示性能,充分发挥硬件能力。
[Abstract]:LED display screen is called electronic display, which is composed of LED LED lattice and LED driver panel. Full-color LED display can clearly display all kinds of information, such as picture, text, animation, video and chart. Also can display TV, video, and live field. Led display screen has the advantages that other traditional display devices can not be compared: high brightness, low power consumption, stable performance. The area can be expanded at will. At present, it is widely used in transportation, media advertising, public places and many other fields. According to the demand of LED display screen and the characteristics of asynchronous playback mode, a high-performance embedded platform is designed in this paper. Asynchronous playback control of full-color LED display is realized. The hardware structure of the system is based on DM3730 microprocessor, peripheral extended network communication, serial port communication and SD large-capacity memory card interface. USB interface and other external modules. The embedded operating system environment with linux as the core is built, and based on linux, the embedded operating system is developed with powerful function and stable performance. Universal offline player software for full color LED display screen. The main contents of this paper include the following: 1. Analyze the user's demand, design the whole model of the asynchronous playing system, divide the hardware system and the software system function module. 2. Build system-tier software based on DM3730 platform, including BootLoader porting Linux version 2.6.32 kernel porting, root file system building, device driver porting. 3. Development of LED general offline player control software. A player control software supporting program scheduling, playback control, multi-area display and multi-media type is designed. 4. Design of display system based on 3D hardware acceleration. Using 3D graphics acceleration function of DM3730 to improve the display performance of the system and give full play to the hardware capability.
【学位授予单位】：中国科学院研究生院（长春光学精密机械与物理研究所）
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TN873

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